Several plane rides ahead - which noise canceling headset to buy?

[M A V I C]

[quote will2000]My hat size is around XL. Don't headphones have a way to adjust them to your head?
Yes, but the bigger your head the more pressure the headphones push on your ears with. If they put the same pressure as my 250's, those should work well for you.

But I'm not sure how they differ from the 250's. Also, the 250's sound better than the Bose ones I've tried.